首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
Parents of children who happily eat what’s put in front of them might assume their kids are well nourished. But two new studies
Parents of children who happily eat what’s put in front of them might assume their kids are well nourished. But two new studies
admin
2017-04-13
46
问题
Parents of children who happily eat what’s put in front of them might assume their kids are well nourished. But two new studies drive home the importance of varying that diet. Deficiencies of vitamin D, omega-3 fats, and other healthful compounds are common; it turns out—and consequential.
Growing evidence links vitamin D deficiency not only to weak bones but also to impaired immunity, asthma, and diabetes among other problems. And some of the latest research finds that rates of asthma and related respiratory problems climb in kids who are short on other commonly missing essentials, including vitamins C and E and omega-3 fatty acids.
A team at the Harvard School of Public Health evaluated the diet and respiratory(relating to the process of breathing)health of some 2,000 North American high school seniors and found that teens who lack of fruit, vegetables, and other healthful foods were most likely to have problems such as coughing, panting, episodes of bronchitis, and asthma.
Vitamins C and E, which are abundant in fruit and dark-green vegetables, may "protect the lung from stress," says Harvard research fellow and study leader Jane Burns. Omega-3 reduces inflammation, a key feature of asthma, in which airways swell and make breathing difficult. Oily fish like salmon, mackerel, and tuna—as well as cod-liver oil—are rich in both omega-3 and vitamin D. Vitamin D can also be obtained from multivitamin milk and sunshine—and many kids should be getting more of both.
In another new study, researchers found that 55 percent of outwardly healthy children and teenagers they tested didn’t have enough vitamin D to grow healthy bones. Dark-skinned children were particularly likely to be short of the bone-building vitamin, according to Babette Zemel, an author of the study and director of the Nutrition and Growth Laboratory at Children’s Hospital of Philadelphia. The melanin(a natural dark brown colour in human skin, hair, and eyes)that makes their skin dark also blocks ultraviolet rays, which the body uses to make vitamin D. In winter, when the sun was weakest, more than 90 percent of blacks in the study were vitamin D deficient.
Researchers suggest pointing kids outside, and waiting a few minutes before putting on sun block; 10 minutes of midday summer sun provides 10,000 international units of the vitamin—more than enough for a day. Like melanin, sunblock prevents the skin from making vitamin D, so a bit of lotion-free exposure is necessary to grab the benefit.
The study on the relationship between diet and respiratory health is to verify that teens
选项
A、will fall ill for the lack of fruits or vegetables intake.
B、will be guarded against lung stress and other similar problems.
C、are most likely to become the victims of respiratory illness.
D、are not easily affected in terms of cough and asthma.
答案
A
解析
判断推理题。第三段提出哈佛大学一项针对青少年饮食和健康的研究表明较少食用果蔬的青少年更易患上呼吸类的疾病。A项符合文意。
转载请注明原文地址:https://kaotiyun.com/show/EBbZ777K
0
考研英语一
相关试题推荐
Homeworkhasneverbeenterriblypopularwithstudentsandevenmanyparents,butinrecentlyyearsithasbeenparticularlysco
Homeworkhasneverbeenterriblypopularwithstudentsandevenmanyparents,butinrecentlyyearsithasbeenparticularlysco
InatimeoflowacademicachievementbychildrenintheUnitedStates,manyAmericansareturningtoJapan,acountryofhigha
Eventoday,youmightthinkmanyAmericanchildrenareindangerofbecomingseriouslyundernourished.Millionsofparentsnever
TheU.S.SecretService,whichstudies"targetedviolence",providesinsightontheurgencyoftheneedinits2002"SafeSchool
Forthefirsttime,GeorgeBushhasacknowledgedtheexistenceofsecretCIAprisonsaroundtheworld,wherekeyterroristsuspe
Forgetmilkydrinks,hotwaterbottlesorcurlingupwithagoodbook.Therealsecrettoagoodnight’ssleepmaybewhereyou
Itistheurbandriver’smostagonizingeverydayexperience:thesearchforanemptyparkingplace.Circling,narrowlymissinga
Itistheurbandriver’smostagonizingeverydayexperience:thesearchforanemptyparkingplace.Circling,narrowlymissinga
Itistheurbandriver’smostagonizingeverydayexperience:thesearchforanemptyparkingplace.Circling,narrowlymissinga
随机试题
用酸溶解金属铝时,铝块越纯溶解速率越慢。 ()
脑膜瘤多发源于
糖尿病患者代谢异常的临床表现不包括
实验室为其应用而制定检测和校准方法的过程应是有计划的活动,并指定()人员进行。
甲市某电台为在乙市从事拍摄工作而设市了临时机构,并在乙市某银行开立了银行账户,则该银行账户属于()。
某酒厂为增值税一般纳税人,主要生产粮食白酒和啤酒。2004年1月“主营业务收入”账户反映销售粮食白酒50000斤,取得不含税销售额105000元;销售啤酒150吨,每吨不含税售价2900元。在“其他业务收入”账户反映收取粮食白酒品牌使用费4680元,销售啤
下列各项中,会导致企业采取高股利政策的事项是()。
殿试按成绩分为“三甲”,一甲:取三名,叫“赐进士及第”。第一名俗称(),第二名俗称(),第三名俗称()。
根据所给资料,回答下列小题。2011年8月,上海市接待日本游客数是新加坡游客数的()倍。
在表单数据环境中,将环境中所包含的表字段拖到表单中,根据字段类型的不同将产生相应的表单控件,下列各项中,对应正确的一项是()。
最新回复
(
0
)